Subtract 30/12 from 90/15, Solve 6 0/15

Subtract 30/12 from 90/15

1^st number: 6 0/15, 2^nd number: 2 6/12

90/15 - 30/12 is 7/2.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 12 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 15 × 4 = 60,
90/15 = 90 × 4/15 × 4 = 360/60
Likewise, for the 2nd fraction, since 12 × 5 = 60,
30/12 = 30 × 5/12 × 5 = 150/60
Subtract the two like fractions:
360/60 - 150/60 = 360 - 150/60 = 210/60
After reducing the fraction, the answer is 7/2
In mixed form: 31/2

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